drivers/gpu/host1x/context.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 /*
   3  * Host1x context devices
   4  *
   5  * Copyright (c) 2020, NVIDIA Corporation.
   6  */
   7
   8 #ifndef __HOST1X_CONTEXT_H
   9 #define __HOST1X_CONTEXT_H
  10
  11 #include <linux/mutex.h>
  12 #include <linux/refcount.h>
  13
  14 struct host1x;
  15
  16 extern struct bus_type host1x_context_device_bus_type;
  17
  18 struct host1x_memory_context_list {
  19         struct mutex lock;
  20         struct host1x_memory_context *devs;
  21         unsigned int len;
  22 };
  23
  24 #ifdef CONFIG_IOMMU_API
  25 int host1x_memory_context_list_init(struct host1x *host1x);
  26 void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl);
  27 #else
  28 static inline int host1x_memory_context_list_init(struct host1x *host1x)
  29 {
  30         return 0;
  31 }
  32
  33 static inline void host1x_memory_context_list_free(struct host1x_memory_context_list *cdl)
  34 {
  35 }
  36 #endif
  37
  38 #endif